feat: add i18n localization with language switcher to all web apps

- Add svelte-i18n configuration with SSR support to all web apps
- Create LanguageSelector component for each app with brand colors
- Add German and English locale files
- Integrate language switcher into login pages via headerControls snippet
- Fix Tailwind v4 @source directives for shared package scanning
- Update AppSlider styling to match login container design

Apps updated:
- Memoro (gold #f8d62b)
- Märchenzauber (pink #FF6B9D)
- ManaDeck (purple #8b5cf6)
- ManaCore (indigo #6366f1)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/shared-icons/src/iconPaths.ts

@@ -119,6 +119,10 @@ export const iconPaths = {
 	gear: '<path d="M128,76a52,52,0,1,0,52,52A52.06,52.06,0,0,0,128,76Zm0,80a28,28,0,1,1,28-28A28,28,0,0,1,128,156Zm92-28a92.11,92.11,0,0,1-2.33,20.84A12,12,0,0,1,206.5,158l-16.29-6.73a68.35,68.35,0,0,1-24.91,14.4L163.37,182a12,12,0,0,1-10.06,9.89,92.75,92.75,0,0,1-25.44,0A12,12,0,0,1,117.81,182l-1.93-16.29a68.35,68.35,0,0,1-24.91-14.4L74.68,158a12,12,0,0,1-11.17-9.16,92.11,92.11,0,0,1,0-41.68A12,12,0,0,1,74.68,98l16.29,6.73a68.35,68.35,0,0,1,24.91-14.4L117.81,74a12,12,0,0,1,10.06-9.89,92.75,92.75,0,0,1,25.44,0A12,12,0,0,1,163.37,74l1.93,16.29a68.35,68.35,0,0,1,24.91,14.4L206.5,98a12,12,0,0,1,11.17,9.16A92.11,92.11,0,0,1,220,128Z"/>',
 	'warning':
 		'<path d="M128,20A108,108,0,1,0,236,128,108.12,108.12,0,0,0,128,20Zm0,192a84,84,0,1,1,84-84A84.09,84.09,0,0,1,128,212Zm-12-80V80a12,12,0,0,1,24,0v52a12,12,0,0,1-24,0Zm28,40a16,16,0,1,1-16-16A16,16,0,0,1,144,172Z"/>',
+	'alert-triangle':
+		'<path d="M236.8,188.09,149.35,36.22h0a24.76,24.76,0,0,0-42.7,0L19.2,188.09a23.51,23.51,0,0,0,0,23.72A24.35,24.35,0,0,0,40.55,224h174.9a24.35,24.35,0,0,0,21.33-12.19A23.51,23.51,0,0,0,236.8,188.09ZM222.93,203.8a.6.6,0,0,1-.48.2H40.55a.6.6,0,0,1-.48-.2.51.51,0,0,1,0-.52L127.62,51.37a.72.72,0,0,1,1.24,0l87.55,151.91A.51.51,0,0,1,222.93,203.8ZM116,144V104a12,12,0,0,1,24,0v40a12,12,0,0,1-24,0Zm28,40a16,16,0,1,1-16-16A16,16,0,0,1,144,184Z"/>',
+	'alert-circle':
+		'<path d="M128,20A108,108,0,1,0,236,128,108.12,108.12,0,0,0,128,20Zm0,192a84,84,0,1,1,84-84A84.09,84.09,0,0,1,128,212Zm-12-80V80a12,12,0,0,1,24,0v52a12,12,0,0,1-24,0Zm28,40a16,16,0,1,1-16-16A16,16,0,0,1,144,172Z"/>',
 	'question':
 		'<path d="M128,20A108,108,0,1,0,236,128,108.12,108.12,0,0,0,128,20Zm0,192a84,84,0,1,1,84-84A84.09,84.09,0,0,1,128,212Zm0-140a32,32,0,0,0-32,32,12,12,0,0,0,24,0,8,8,0,1,1,8,8,12,12,0,0,0-12,12v8a12,12,0,0,0,24,0v-1.26A32,32,0,0,0,128,72Zm12,100a16,16,0,1,1-16-16A16,16,0,0,1,140,172Z"/>',
 	'house':

packages/shared-icons/tsconfig.json

@@ -1,16 +1,19 @@
 {
-  "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "target": "ESNext",
+    "target": "ES2022",
     "module": "ESNext",
     "moduleResolution": "bundler",
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
     "strict": true,
     "esModuleInterop": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
     "resolveJsonModule": true,
     "isolatedModules": true,
-    "noEmit": true
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+    "types": ["svelte"]
   },
-  "include": ["src/**/*.ts", "src/**/*.svelte"]
+  "include": ["src/**/*"],
+  "exclude": ["node_modules"]
 }